93 IDI Injectors - Ford Powerstroke Diesel Forum
7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

 
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post #1 of 3 Old 10-21-2010, 08:52 AM Thread Starter
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93 IDI Injectors

Okay so a guy brought up a 1993 IDI to the shop today and he thinks the injectors are bad along with the Orings. Well it has a really bad knock coming from it witch sound like its coming from the injector itself. It also pours alot of white smoke and has a really really rough idle to the point i dont think its going to stay running.

He said it doesnt go through alot of oil or coolant...

What do you guys think before i start throwin parts at it? Injectors?

Note...i dont work on the IDI much so im kinda about them.

Thanks guys
Steve

SLS Diesel Performance
Cincinnati, Ohio
1997 F250 Supercab Long Bed PSD
Stage 1 injectors, Built trans, Tyrant tunes, Dana 60 swap, Fuel system, and Adrenaline HPOP
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post #2 of 3 Old 10-21-2010, 09:02 AM
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With the knocking sound....dont figure it to be injectors...I could be wrong though. Worked on one a cple months ago... same symptoms, he lost 2 lifters.....

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post #3 of 3 Old 10-22-2010, 07:04 AM
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I would rule out injectors first. With truck idling loosen each injector line. If it idles worse, that injector is good. If you loosen a line and the idle doesn't change, there you go. A stuck open injector will cause his symptoms.

I would lean more towards injector over valvetrain.

-Justin-
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